Shigaite and Uvite Physical Properties
Tenacity
Moderately flexible
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.32
  
2.97-3.14
  
Fracture
Flexible Flexible fragments.
  
Uneven, Conchoidal, Brittle
  
Cleavage
Perfect on {0001}
  
{1011} Indistinct
  
Mohs Hardness
2
  
Not Available
  
Chemical Composition
Not Available
  
Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
  
Shigaite and Uvite Chemical Formula
While comparing Shigaite and Uvite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Shigaite and Uvite chemical formula.
>- Chemical formula of Uvite- Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Shigaite and Uvite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Shigaite and Uvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Shigaite and Uvite Optical Properties during the identification of gemstone. Specific gravity of Shigaite is 2.97-3.14 whereas that of Uvite is 2.97-3.14.